// Use PHP's native public function to do the initial wordwrap. // We set the cut flag to FALSE so that any individual words that are // too long get left alone. In the next step we'll deal with them. $str = wordwrap($str, $charlim, "\n", FALSE);

// Split the string into individual lines of text and cycle through them $output = ""; foreach (explode("\n", $str) as $line) { // Is the line within the allowed character count? // If so we'll join it to the output and continue if (strlen($line) <= $charlim) { $output .= $line.$this->newline; continue; }

$temp = ''; while ((strlen($line)) > $charlim) { // If the over-length word is a URL we won't wrap it if (preg_match("!\[url.+\]|://|wwww.!", $line)) { break; }

// If $temp contains data it means we had to split up an over-length // word into smaller chunks so we'll add it back to our current line if ($temp != '') { $output .= $temp.$this->newline.$line; } else { $output .= $line; }

// Loop through each character in the line to add soft-wrap // characters at the end of a line " =\r\n" and add the newly // processed line(s) to the output (see comment on $crlf class property) for ($i = 0; $i < $length; $i++) { // Grab the next character $char = substr($line, $i, 1); $ascii = ord($char);

// Convert spaces and tabs but only if it's the end of the line if ($i == ($length - 1)) { $char = ($ascii == '32' OR $ascii == '9') ? $escape.sprintf('%02s', dechex($ascii)) : $char; }